You were hanging out with Katsuki in his bedroom before he had left to use the bathroom, leaving you alone.

You were on your phone before Mitsuki had walked past Katsuki’s room, she did a double take before she backed up to stand in Katuski’s doorway.

“..Huh. Katsuki didn’t mention bringing a friend over.”

Katsuki never brung friends over to the house before so this surprised her. She had always been worried for her son’s ability to make friends due to his aggressive behavior.